| 摘要 |
PURPOSE:To realize a long size as well as to obtain a sufficient superconductive property by forming a groove on a long size reinforcement member extending in the longitudinal direction, and installing a ceramics superconductive wire material in the groove. CONSTITUTION:In a groove 2 formed in the longitudinal direction of a long size reinforcement member 1, a basic material 3a for a ceramics superconductive wire material covered with Cu is installed, and then, it is covered by a Cu pipe 5. After that, it is extended to get a specific outer diameter, the Cu pipe 5 and the Cu coverage layer 3b are removed by using nitric acid, and heat- treated at a temperature higher than 900 deg.C. As the reinforcement member, a material such as a stainless steel which does not react in the heat treatment of the ceramics superconductor wire material and has the heat-resisting property can be used. And for the superconductive wire, a ceramics made by heat-treating a material for the ceramics superconductor covered with Al or Ag can be also used. By forming the reinforcement member into a spiral, a coil can be formed in a simple way. |
